如果你无所畏惧，你会怎么做？
蒸汽的力量如今已被充分理解，剩下的只是改进实践。
最好的数学是你第一眼看不明白的数学。
The beauty of mathematics lies in its ability to describe the universe in a language that is both precise and universal.
The oldest， shortest words—'yes' and 'no'—are those which require the most thought.
But there is no such liberty as the power to dispose of what we please.
They had said that the city was a paradise, but I found it a hell.